【题目】某企业准备投入适当的广告费对产品进行促销，在一年内预计销售
（万件）与广告费
（万元）之间的函数关系为
.已知生产此产品的年固定投入为3万元，每生产1万元此产品仍需再投入32万元，若每件销售价为“平均每件生产成本的150%”与“年平均每件所占广告费的50%”之和.
（1）试将年利润
（万元）表示为年广告费（万元）的函数；
（2）当年广告费投入多少万元时，企业年利润最大？最大利润为多少？
科目：高中地理 来源： 题型：
【题目】 约一万年前，北冰洋被完整的冰原覆盖，形成“气候性陆地”，有的学者称之为北极洲。北极洲的冰层上面覆盖着黄土层，进而演化成为一片辽阔的草原，生活着身披厚密长毛的猛犸象等大型食草动物。随着环境巨变，这些史前动物逐渐灭绝。
据此完成下面小题。
【1】北极洲的黄土层形成于
A.洋底泥沙上涌固结B.当地岩石的风化物
C.草原腐殖质的堆积D.风力的搬运和沉积
【2】北极洲草原所需的水分主要来自
A.暖季雨水B.积雪融水
C.冰层融水D.上涌的海水
【3】猛犸象灭绝的原因最可能是
A.气候变冷B.冰原消融
C.降水锐减D.古人类捕杀
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】（旅游地理）阅读材料，回答问题。
鄠邑区位于陕西省西安市，距西安主城区18千米，处于西安“半小时经济圈”。鄠邑区有2000多名农民画家，主要创作农村特色鲜明的民俗绘画，每年举办的农民画艺术节吸引大量的游客，游客主要来自西安市区。
分析参观鄠邑区农民画的游客多来自西安市区的原因。
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】下列图表是对汉字“书写”现状的调查。请仔细阅读，完成后面的题目。
(1)从图中汉字“书写”的现状可以得出怎样的结论？(要求：不出现数字，字数10～20字)
答：
(2)针对这一现状，请从社会和学校角度指出其产生的原因。(要求：字数分别在10～20字)
①社会： 。
②学校： 。
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】阅读下面两首诗，回答后面问题。
【注】①催轴：即催车上路。②原陆：高原和平陆。③建安二十四年，曹操借故杀了曹植亲信杨修，次年曹丕继位．又杀了曹植知友丁氏兄弟。曹植身处动辄得咎的逆境，无力救助友人，深感愤忿，内心十分痛苦，只能写诗寄意。
【1】曹诗用“高树”，吴诗却用“高木”，“高木”一词使用的是否恰当？请结合所学具体分析 。
答：
【2】两首诗中都写到了“悲”字，请结合诗歌说说两位诗人为何而悲。
答：
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】
Is this a car? Is it a smart phone? Is it a gaming machine?
Yes to all three. The Toyota Fun-Vii is a pleasure palace on wheels.
If Toyota has its way, paint jobs could become a thing of the past, because it has introduced an amazing car that can change its whole look in an instant.
The Vii in Fun-Vii, which stands for “Vehicle,Interactive, Internet” It is a small three-seater car that looks like a smart phone, so it is called a smart phone on wheels．Inside and out, most aspects of the car can interact（互相作用） with the internet and be controlled by a smart phone．The magical car allows the owners to download pictures from their phones onto the outside, so that the look of the car could be changed instantly．The color inside could also be changed to reflect the owner’s mood．Just as the company president Akio Toyoda said, "A car must appeal to our emotions．If it’s not fun, it’s not a car．"
Its outside and inside are not made of solid paint but touch screens that can display pictures and videos．A network update function downloads all the latest software to make sure the car is always up-to-date, and it can provide the latest entertainment as well as information about its surroundings to the driver．As you drive around, the thoughtful car allows you to communicate with your friends in the nearby cars．It also helps you find your way from one place to another． It’s all because the car is networked with all the other cars on the road and drives itself． The smart car is a practical, family sized vehicle fuelled by hydrogen, and it is one of the futuristic concept cars under the theme of "fun to drive, again"．It heralds （预示） a not-too-distant future where people, cars and society are linked．
【1】Which of the following may not be a key word for the concept car?
A．Fun．
B．Interactive．
C．High-speed．
D．Smart．
【2】According to the text, Toyota Fun-Vii is _____．
A．a new concept car not powered by gas
B．an amazing car without any pollution
C．the latest software from network
D．a gaming machine with high speed
【3】The owners of the Fun-Vii can reflect their mood by _____．
A．downloading images to change the outside
B．interacting with computers while driving
C．changing the color inside the car
D．changing the speed of the car
【4】What does Paragraph 4 mainly tell us?
A．The ways of driving the Fun-vii．
B．How can you find your way in the Fun-Vii．
C．The unusual look of the Fun-Vii．
D．The new functions of the Fun-Vii．
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】阅读下面短文， 按要求补全表格。
Do you need useful and interesting books? Here we have got some for you.
Best learners
This book can give you the answers to the questions most often asked by parents, teachers and students themselves. Read this book and learn:
What the three difficulties in study are and what to do with them.
What to do if you don’t take an interest in a subject you are studying.
Twenty-six simple exercises to help you study easily and fast.
You will get more from this book. For younger students, you can buy Learn to Study for Beginners. It is easier to understand.
How to keep pets
A pet can be our best friend. Do you have pets in your house? Are they in good shape? This book not only offers you many colorful pictures of lovely pets, but also provides you with the knowledge about:
How to choose right pets for yourself.
How to build houses or nests for your pets.
How to feed the pets and how to keep them clean.
Buy this book and you will learn more.
We have many other books on sale. For more information enter www. knowbetter. com. If you buy two or more books at a time, you will get 10% off.
Best learners | What’re the three difficulties in study and how to 【1】 ________ with them. |
What if you aren’t 【2】 ________in a subject you are studying. | |
If you finish the 26 simple exercises , you can study easily and fast. | |
How to keep pets | You should choose the pets you like. |
You’d better build houses or nests for them. | |
In order to make your pets 【3】 ________, you should feed them and keep them clean. | |
The book , 【4】 ________, is better for younger students to read. | |
If you (60) ________ more information, you can go to our website. | |
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】下面是京津冀“污染防治”构思框架图，请把这个框架写成一段话，要求内容完整，表述准确，语言连贯，不超过120个字。
答：________________________________________________________________________
________________________________________________________________________
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】（十八）
根据图画，写一篇英语短文，描述今昔通讯方式的变化，以及这些变化给人们生活带来的影响。
注意：
1．词数：不少于120字
2．生词：通讯：communicate(with sb．)vi. communication （n．） 互联网：the Internet
Great changes have taken place in the way of communication in people’s life in recent years.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
